This is the difference between a lecturer and a teacher.
Ron Jeffries @RonJeffries
26 Jul 2017
Every individual in the room knows something important that I don’t know. Every day, not just when speaking. That’s OK. #SpeakerConfessions

Jul 27, 2017 · 1:03 AM UTC

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Replying to @mholzschlag
I learned from every seminar that I taught. Some of the most interesting classes were to IBM engineers.